Locking device



Nov. 10, 1942. R. MARPLE LOCKING DEVICE Filed-Jan. 28, 1958 6 Sheets-Sheet 1 INVENT R 770110 Mar Ia. BY

ATTORNEY Nov. 10, 1942. R. MARPLE LOCKING DEVICE 6 Sheets-Sheet 2 Filed Jan; 2a, 1938 INVENTOR )ToZZo 0741722, BY

A? vflig TTORNEYS' Nov. 10, 1942.

R. MARPLE v LOCKING DEVICE Filed Jan. 28, 1938 6 Sheets-Sheet 3 IN VE N TOR 79210 flVarfZe.

f M 013N515.

Nov; 10, 1942.

R. MARPLE 2,301,557

LOCKING DEVICE Filed Jan. 28, 1938 6 Sheets-Sheet 4 l N V EN TOR Nov. 10, 1942. R, MARPLE 2,301,557

LOCKING DEVICE Filed Jan. 28, 19158 6 Sheets-Sheet 5 INVEZV'IUR Fo/Zo Wa f A TTORNE ysf Nov. 10,v 1942. R, MARPLE LOCKING DEVICE Filed Jan. 28, 1938 6 Sheets-Sheet 6 [N VENT-20R FOZZa A7 r716,

, T T ORNE Y PatentedNov.10,1942 a i 2 301 557.

UNITED STATES PATENT OFFICE- LOCKING DEVICE Rollo Marple, Jackson, Mich., assignor toHa'ncock Manufacturing Company, Jackson, Mich., a corporation of Michigan w Application January 28, isssQserial No.1 s7,370 31 Claims. (01. za -13s) This invention relates to latching devices, and Fig. 4 is a view in side elevation, takenalong in particular provides improved latching devices the line 4-4 of Fig. 3; v f p adapted for but not limited to use in connection Fig. 5 is a view in section, taken along the line with automobile doors or the like. 5-5 of Fig. .3;

The principal objects of the present invention Fig. 6 is a view in perspective, takenalong the are to provide improved latching devices which line B6 of Fig. 4 l

are economical of manufacture, relatively simple Fig. 7 is a view in horizontal section, taken in construction, and which are quiet and eilective along the line 1-1 of Fig. 4; in operation; to provide such latches, which, in g- 8 s a iewc rr p ndin generally to 18- addition to the usual locking functions perform 10 bu Showing the parts in an unlocked or rethe functions of door dovetails; to provide such leased'pos o the bolt;

structures in which the lock boltscooperate with Fig. 9 is a diagrammatic. View in elevation corthe lock keepers to constitute door. dovetails; to responding e l y to but showin the providesuch structures including means for conpa in a partially Closed position of e o tinuously urging the bolt in a direction to bias 1d 10 is a View in d e e at o with certain the associated door to a fully closed position; to of the p t s w in t o o a modified emprovide such structures including means for rlgidbodiment of the invention; 1y holding the associated bolt against a retractg- 11 wi k filling e ne ll| ing movement when the door is closed, so as to of 10; positively prevent an opening movement of the 20 12 View liken along the 11119 door: to provide such structures including a of j 11? slidable bolt, dogging means for acting upon the 13 is a we taken along lme '3 |3 bolt U e it in a locking direction, and retractof j I mg means disposed to act on the dogging means 0 F1g.. 14 1s a view in side elevation of the look so as to release the bolt and permit an opening keeper movement of the door; to provide such structures gi is a View in frontelevation of the 107k utilizing'a plurality of progressively dimensioned dogging elements, arranged to become isvuccey Fig. 16 15 a fragmentary view in elevation of sively 'efi'ective so as to positively hold the door in g g g-gg gghigigiggifiii gfigh the fully closed position; to provide such structionzaken on thenne of Fig tures characterized in that certain of l the re- Fig 18 is a w in front elevation of further tracting means of the bolt cooperate with the lock modification of the invention. a

keeper to form a so-called safety catch effective Fig 19 is a i in i eleation of the struc to hold the door in a partially closed position; to tum s'hown in i provide such structures in which the bolt is slidable upon the outer face of the latch, and, with 20 1s mew in rearele'vatmn of the struc ture shown in Fig. 18; I I an abutment earned b the lock constltutes a Fig. 21 is a view in elevation of a lock keeper male dovetan E nd to p ovi Such articularly adapted for use with the structures structures in which the bolt and the casing of f Fig. 18 through and the lock cooperate to form a dovetail member. Fig. 22 j a View taken along t line zz .zz

With the above as well as other objects in view, f Fig Z1 7 which. appear in the following description d Referring to Figs. 1 through 9 of the drawings, n e app d Claims. a preferred but illustrathe elements of the latch are assembled upon a tive embodiment Of the invention lS,ShOWI1 in the -15 case late 20 the base 22 whereof is conventionaccompanying w s. h oughout which corally secured to the inner face of the inner panel r p n in r f r n ch r t r re u ed o 24 .of the associated vehicle door 26, and the designate r e p d p a d in h ch: angularly turned flange 28 whereof is conven- Figure 1 is a view in elevationof one form of tionally secured to the inner face of the door the invention asapplied to the door of an autorail 30.

mobile; The flange 28 of the case plate forms a sup- Fig. 2 is a view in horizontal section taken port for a supplemental housing 32, which proalong the line 1-4 of Fig. 1; l jects outwardly from the outer face thereof, and

Fig. 3 is a view in elevation, taken along the which houses the vertically slidable bolt 34 and a line 33 of Fig. 2; 53 set of three locking dogs 36, 38 and 40. The base jecting direction.

22 of the case plate forms a support for the remaining elements of the latch, and which comprise generally a pivotallyv mounted safety catch member 42, a pivotally mounted retracting arm 44, an inside operating link 46 and an outside rollback element 48.

The bolt 34 is, illustrated asbeing formed, by suitable stamping operations, from an initially plane sheet of stock. The upper end and the right hand side portions of the bolt 34, as viewed in Fig. 3 are provided with an integral flange having two tapered keeper engaging portions 50 and 52, and a side wall portion 54. To strengthon the flange, an insert suchas 56. is preferably secured to the body of the bolt 34 by means of a pin 58, and the lower end of the insert 56 forms a dog engaging surface 60 for cooperation with the noses of the several locking dogs 36, 38 and 40. The body of thebolt 34 extends downwardly and laterally as viewed in Fig. 3, and terminates in a laterally turned foot 62, which cooperates as described hereinafter with the lower keeper abutment 64 to give the bolt an initial upward movement during the course of a door closing operation.

The housing 32 for the bolt 34 is provided with enclosing side walls 66 and .68, and is provided with an intermediate wall "I which extends downwardly a short distance from the top thereof. A part of the upper end of the housing 32 is enclosed by the wall I2, and the balance of the upper end thereof is open so as to tion and normally bears against the nose I4 of the safety catch 42. The dogs are continuously urged to the just mentioned rotative position by a coil spring such as 84, one of which is provided for each dog, and which is suitably anchored to the outer surface of the casing flange 28. With this relation it will be appreciated that the locking-dogs are continuouslyurged in a locking direction, but may be rotated against the force of their associated compression springs in a counterclockwise direction, as viewed in Fig. 3, to a position in which the nosesthereof are free of the dog-engaging surface 60 on the bolt 34, so as to permit the bolt 34 to move downwardly to. a retracted or door releasing position.

The safety catch is preferably formed from an initially plane sheet of stock, the nose 14 whereof projects through an opening provided permit movement of the upper end of the bolt 34 therethrough. The lower end of the housing 32 is provided wit the movement of the foot 62 therethrough, and is also provided with an opening to accommodate the movement of the nose I4 of the safety catch 42 therethrough. The balance of the lower end of the housing 32 is enclosed by an abutment 16; which cooperates with the keeper abutment 64 as hereinafter described.

The bolt 34 is slidably guided during its vertical movement between the side wall 68 of the housing 32, and the intermediate wall I0 thereof The base of the bolt 34 abuts and slides upon the outer surface of the casing flange 28, and the outer edge of the flanged portion 54 abuts the outer enclosing surface of the housing 32. The

bolt 34 is further guided by a pin 16, the ends whereof are supported in the flange 28 and in the outer surface of the housing 32, and which rides in an elongated slot 18 formed in the body of the bolt. It will be seen accordingly that the bolt 34 is efiiciently guided for vertical sliding movement within the housing 32.

The three locking dogs 36, 38 and 40 are pivotally mounted upon the previously mentioned pin 16, and as clearly appears in Fig. 5, occupy the space between the base of the bolt 34 and the outer enclosing wall of the housing 32. The upper surface of the dogs, as viewed in Figs. 3 and 5, are of arcuate form, and constitute noses which bear against the previously mentioned surface 60 of the bolt 34 so as to hold and continuously urge the bolt 34 in an -'upward or pro- The dogs 36, 38'and 40 are of progressively increasing length, in the order named, and so become successively effective, as described hereinafter, to urge bolt 34 towards, and to hold it in, the just mentioned projected position, The dogs 36 and 38 are provided with lateral projections such as 80, and the dog 40 is provided with the laterally turned foot 82 which engages under the just mentioned projech an opening to accommodate therefor in the flange 28, as clearly appears in Fig. 4, and the main body whereof projects inwaidly of the flange 28 and lie in a plane gener ally parallel to the plane of the base 22 of the casing. The right hand end portion of the safety catch 42 isflanged as indicated at 90, so as to give sufiicient strength to the nose portion. The under side of the nose portion I4 is tapered as indicated at 92, for cooperation with the keeper abutment B4.

In addition to the nose portion, the safety catch 42 is provided with a rearwardly and upwardly projecting arm portion 94, which coopcrates as hereinafter described with the inside" and outside retracting elements to cause a piv} otal movement of the safety catch 42 about its supporting pin 96. Thetwo ends of pin 96 are supported in the base 22 of the case plate" 20,

' and in an outer case plate member 98, which lies generally parallel to the base 22. A suitable spring 99 is anchored to the base 22 of the case plate, and the free end thereof bears,-"against the safety catch 42, so as to continuously urge it to the locking position shown in Figs, 3 and 4.

The inside retracting link 46 is pivotally supported upon the case plate by means of the previously mentioned pin 96, and extends generally upwardly from said pin. A pin I00 is provided to connect the inside retracting link 46 to its usual inside operating member I02, which. may extend to the usual inside handle rmechanism (not The inside operating member 46 is provided with laterally inwardly turned feet I04, and I06, which cooperate as" described below with the arm portion 94 of thesafety catch 42.

The retracting link 44 is pivotally supported upon the case plate by means of the lower end thereof bears against the arm portion 94 of the safety" catch 42. The lower end of the retracting link 44 is also disposed in the path of movement/of and normally engages and retains the outside rollback member II 2 in the retracted position. It will be appreciated that a rotation of the outside rollback 48 causes a corresponding rotation of the retracting link 44 and consequently causes a retracting movement of the safety catch 42. The rollback 48 is conventionally carried upon the usual squared spindle II2, to which the outside handle II4 may be connected.

The lock keeper for the lock comprises the two blocks or abutments I20 and 64, wh1ch are suitably secured to the outer face of the door pillar I22, and are suitably spaced so as to receive the housing 32, the bolt 34 and the safety catch 42 between them. The lower end of the upper abutment I20 is formed to provide the two tapered thepin H0, and

' zontal surface I28 I 64, The three locking dogs the keeper surface I28.

surface 60 on the bolt 34.

bolt engaging faces I24 and I26, and the upper surface of the lower abutment 64 is formed to provide the generally horizontal upper edge I28 and the vertical side I30.

Considering the operation as a whole ofthe lock, it will be appreciated that theparts are shown in Figs. 3 and 4 in the fully closedposition of the door, in which the tapered base 50 of the bolt 34 bears against the tapered base I24 of the upper abutment I 28, and in which the abutment 16 at the lower end of the housing '32 rests upon and bears against the upper horiof the lower keeper abutment 36, 38 and 40 are continuously urged in a clockwise direction as viewed in Fig. 3, by their associated compression springs, and consequently apply a continuously acting force upon the bolt 34 tending to urge the latter upwardly. This upward force on the bolt causes it to wedge against the lock keeper base I24 and causes the abutment I6 to wedge against The lock and keeper parts thus function as an exceedingly efiicient dovetail, and serve to prevent vertical rattling movement of the door. At the same time, the

wedging action between the bolt and the keeper' acts to continuously urge thedoor to the fully closed position. Any additional closing movement of the door caused by this wedgingaction or otherwise is immediately taken up by the dogs 36, 38 and 40.

The dogs are preferably dimensioned so that in the normal fully closed position of the door the smaller dog 36 is in such a position that the reaction of the bolt face 40 thereon is in a vertical direction, so that such dog iseffective to positively prevent a retracting movement of the bolt. It is to be noted also that the point of engagement between the dogs and the bolt is at one side of the center of rotation of the dog, so that any tendency toward rotation resulting from the engagement between the dogs and the boltis in the locking direction of rotation of the dogs. With the dog 36 positioned in relation, it will be appreciatedthat the two larger dogs 38 and 40 remain effective to apply additional door closing force. If it is desired to open thedoor, either the inside retracting link. 46 or the outside rollback member 48 may be rotated, so as to release the dogs from the bolt, and permit the latter to be moved downwardly out of range of the abutment Theaction resulting from a rotation of the outside rollback member 8, from which figure it will be appreciatedthat the rollback rotation causes a corresponding ro- 48 is clearly shown in Fig.

usually aided'by the spring action which results from the previous compression of the usual door stops (not shown). During the opening movement of the door, the bolt 34 is cammed downwardly due to the engagement between the tapered surfaces 50 and I24 associated with the bolt and the keeper abutment I20, respectively. The initial downward movement of the bolt brings the lateral side of the bolt insert 56 into blocking relation to the noses of the dogs 36, 38 and 40, which relation is shown in Fig. thus becomes effective to hold the dogs in the retracted positions thereof.

As soon as the nose of the bolt passes beyond the lower end of the surface I24 on the upper keeper abutment I28, the downward camming action on the bolt ceases. mains in itslowered position, due in part to the action of gravity and also due in part to the slight wedging effect to which it is subjected by the dogs 36, 38 and 40. The bolt 34 may thus be expected to remain in the lower position thereof as long as the door remains openi the just mentioned tative movement of the retracting link 44. The

movement of the retracting link 44, by virtue of its engagement with the upper end of the'arm portion 84 of the safety catch 42, causes the'latter to rotate in a counter-clockwise direction, as viewed in Fig. 8 and also in Fig. 4. This rotation of the safety catch member 42 lifts the nose I4 thereof to a'posi tion above the level of the lower keeper abutment 64, and at the same time, due to the bearing relation between the nose I4 and the foot 82, associated with the dogs, causes the dogs 36, 38 and 40 to rotate in a counter-clockwise direction, to a position in whichthey are out of the path of movement'of the dog engaging As soon as the dogs 36, 38 and 40 are moved out of range of thebolt, the door may be moved in an opening direction, and this movement is scribed manner.

of the safety catch 42 s'ition of the dogs.

Since the dogs 36, 38 and 40 are retained in the retracted position during the latter part of the door opening movement by the bolt 34, it will be appreciated that the outside roll back 48 is required to be retained in the position shown in Fig. 8 only sufiiciently long to insure that the safety catch 42 remains in the lifted position until it passes beyond the vertical side I30 on the lower keeper abutment 64. If the rollback 48 is released to the position shown in Fig. 4 at any time after the Just mentioned action has occurred, the spring 88 associated with the safety catch 42 becomes effective to restore the safety catch 42 to the position shown in Fig. 4, or at least to a position in which the nose I4 thereof bears against the upper horizontal surface I28 of the abutment 64.

It will be appreciated that an opening movement of the door may also be caused by rotating the inside operating link 46, in response to which action the foot I04 thereof bears against the arm 94 of the safety catch 42, and causes the same 'rotative movement thereof as is described above.

Assuming that it is desired to effect a closing and locking of the door, it will be appreciated that in the course of the closing movement, during which the lock structure moves to the right with reference to the'lock keeper, as indicated by the arrow in Figure 9, the outer tapered face 82 initially engages the sloping outer corner 64a of the lower lock keeper abutment 64. Continued closing movement of the door renders the tapered face 64a effective to cam the nose of the safety catch'f42 upwardly, thus permitting the safety catch topass on to the upper horizontal surface of the lower lock keeper abutment64. If it be assumed that the bolt 34 is still in the retracted position, in which it holds the dogs 36, 38 and 40 in the retracted position, it will be appreciated that the upward movement of the safety catch 42 has no effect upon the po- On the other hand. if it be assumed that the bolt 34 occupies the projected position at the beginning of the door closing movement, it will be appreciated that the upwardmovement of the safety catch 42 the dogs 36, 38- and 7 serves to retract 40 in the previously de- In this event, the engagement between the tapered outer face 52 of the bolt'end the innertapered face I26 of the upper lock keeper abutment serves to cam the-boltdownwardly, to the retracted position thereof, in

9. The bolt 34 The bolt, however, re-

be appreciated that the nose I4 of the safety I catch 42 ultimately passes beyond the horizontal surface I28 of the lower lock keeper abutment 64. At this time, the spring 99 associated with the safety catch 42 is rendered effective to move the nose I4 of the safety catch downwardly, to a position in which the vertical face I30 of the abutment 64 serves to cooperate with the safety catch and positively prevent an opening movement of the door. The safety catch 42 and the surface I30 thus cooperate to hold the door in the partially closed or conventional safety position.

As the door closing movement continues, the tapered nose of the bolt reaches the junction be- I tween the tapered faces I26 and I24 of the upper lock keeper abutment I20. Shortly after this point in the door closing movement is reached, the previously mentioned foot 64 formed at the lower end of the bolt 34 engages the previously mentioned tapered face 64a of the lower lock keeper abutment 64. Continued door closing movement renders the abutment 64 effective to lift the bolt 34 to a slight extent. The parts are so proportioned that this lifting action is effective to move the bolt 34 beyond the end of at least thesmallest dog 36, thereby rendering the spring associated with such dog effective to rotate it to a position beneath the dog-engaging surface 60. Dog 36 thus becomes effective to apply a positive continuous upward force to bolt 34, and, because of the camming action between the tapered bolt face 50 and the tapered keeper I face I24, the door is forcibly caused to move inwardly to its fully closed position. During the continued upward movement of the bolt, the remaining two dogs 38 and 40 also become effective to apply a lifting force to the bolt, so that the door is securely held in the closed position in the previously described manner.

, In order to permit the outsideroll back 48 to be locked against actuation, it is provided with a shoulder II3, which projects rearwardly thereof. As clearly appears in Fig. 4, a slight rotation of the inside retracting link 46 in a clockwise, or non-bolt retracting, direction brings the foot I04 thereof beneath and in blocking relation to the shoulder II3. As long, accordingly, as the inside link 46 remains in the just mentioned rotative position, the outside roll-back 48 is locked against actuation. If the link 46 is moved to the just mentioned-blocking position at a time when the door is open, it will be appreciated that the pivotal movement of the safety catch 42, which occurs during the closing movementofthe door as previously described, bringsthe arm 94 thereof into engagement with the foot I06 formed on the inside retracting link, which action restores the inside retracting link 46 .to the normal position shown in Fig. 4, in which the foot I04 thereof is out of blocking relation to the outside rollback 48. V i

The embodiment of the invention shown in Figs. 10 through 17 distinguishes primarily from Referring to Figs. 10 through 17, the'case plate of the lock is formed to define a laterally turned flange 200 which is secured to the inner face of and lies substantially parallel to the rail 202 of the door, and a base portion 204which extends inwardly of the door, adjacent the inner panel thereof. The flange 200 forms a support for a supplemental housing 206, within which the bolt 208 is guided for vertical sliding movement and which projects through an opening in the door rail; and also forms a support for the outside re-. tracting member or rollback 2I0. The base 204 of the case plate forms a support for the safety catch 2I2, the retracting arm 2I4, the series of locking dogs 2I6, 2I8 and 220, and the insiderstracting link 222.

The bolt 208, as in the previously described embodiment, is preferably formed by suitable stamping operations from an initially plane sheet of stock. In its final form, the bolt 208 defines a base portion 224, which slides upon the outer surface of the flange 200 and flange 226 of generally U-shape, the intermediate part whereof defines the two tapered keeper engaging surfaces 221 and 228. A portion of the lower end of the bolt 208 extends laterally from the base 224 to define a foot 230 which cooperates-as hereinafter described, withrthe tapered noses of the locking keeper as hereinafter described.

The outer edge of the flange 226 of the bolt 208 abuts the outer wall of the housing 206, and, as previously'mentioned,the base of the bolt abuts and slides upon the outer surface of the flange 20001 the case plate, so that the bolt is positively guided against in-and-out movement relative to the door. One leg of the flange 226 abuts one side wall of the housin 206, and the other leg thereof abuts a supplemental wall 236 which is struck outwardly from the flange 200. It will be observed, accordingly, that the bolt 208 is effec- V tively guided against lateral movement relative to the flange 200. It is noted that the opening formed in the flange 200, as a consequence of the formation of the wall 236, serves to accommodate the safety catch 2I2, the nose whereof projects outwardly through the flange 200.

The safety catch 2I2 is illustrated as being formed of a single initially plane sheet of stock, and is plvotally secured to the base 204 of the case plate by means of a pin 238. As previously mentioned, the nose 240 at the safety catch 2I2 projectsoutwardly of the flange 200 of the case plate, for cooperation with the lock keeper as hereafter described, and to reinforce the nose portion 240, the safety catch 2I2 is provided with the integrally formed reinforcing wall 242. The main body of the. safety catch 2I2 defines upper and lower noses 244 and 246, for cooperation with a foot 248 formed on the retracting link 2I4, as described below. The safety catch 2I2 i also provided with a nose 250 for cooperation, as described below, with a foot 252 formed on the inside retracting link. 222.

The just mentioned retracting link 2 I4 is pivotally mounted upon the base 264 of the case plate by means of a pin 254, and in addition to the previously mentioned foot 246, is also provided with a laterally projecting foot 256 for cooperation with the locking dog 2I6, 2l8 and 220.

The locking dogs 2I6, 2I8 and 220 are all of the end of each thereof, opposite the tapered nose, is formed as an abutment, such as 258, for engagement by the foot 256 of the retracting link 214. The three dogs 216, 218 and 220 are slidably guided upon the base of the case plat 204 by means of a supplemental housing member 260 which is mounted upon the inner surface of the base of the case plate and extends inwardly thereof. The upper and lower walls of the housing 260 serve to guide the upper and lower edges of the dogs. The side wall of the housing 260 forms one lateral guide for the dogs and the base of the case plate serves as the other lateral guide.

Each dog 216, 218 and 220 is provided with a compression spring such as 262 individual thereto, which continuously urges the associated dog in a projecting or looking direction. A similar coil spring 264 is provided which continuously bears against the retracting link 214 and continuously urges it in a locking direction. Link 214 in turn continuously urges the safety catch 2 12 to the illustrated projected or locking position.

The inside retracting link 222 is suitably pivoted upon the outer surface of the base 204 of the case plate by means of a pin 266. The upper end 223 of the link 222 is adapted for connection to the usual inside retracting lever which may be conventionally connected to the inside handle of the associated dooor (not shown). The link 222 is also provided with a nose 210 which cooperates with the outside rollback member 210 to permit a locking action from the inside of the car.

The outside rollback member 210 is pivotally mounted upon the flange 200 of the case plate by means of a pin 212, and is additionally guided in its movement by means of an anchor 214 which rides in an elongated slot 216 formed in the rollback member. The rollback member 210 projects vertically above the main'body of the lock, and is continuously urged to the position shown in the various figures by means of a spring 218, the free end whereof bears against a foot 280 formed on the rollback member. The spring 2'18 is suitably anchored upon the door rail 202.

The extreme upper end of the outside rollback member 210 is provided with a laterally turned foot 282, which is engaged by the free end 284 of a crank member 286. The crank 286 is rotatably journaled in a bearing 288 provided on a. bracket 290 secured to the inner surface of the door rail, and is suitably connected at its upper end to a handle 292, which is adapted to swing in a generally horizontal plane.

The lock keeper 294, which is secured to one lateral face of the door pillar, is'illustrated as being formed from an initially plane sheet of stock, suitably stamped to define alower abutment 296, and an upper abutment 298, one face' 800 whereof is vertical, and the opposite face 302 whereof is tapered. The lower abutment 294 ccoperates with the undersurface 304 of the housing 206 associated with the bolt 208, and the upper abutment 298 cooperates with the bolt 208 and with the safety catch 212.

Considering the operation as a whole of the embodiment shown in Figs. 10 through 17, it will be appreciated that the various movable elements of the latch are shown in the positions occupied thereby when the door is in the fully closed pc- .the bolt wardly as viewed in Fig. 11, to

effective tocam the nose of the safety catch 212 downwardly as viewed in Fig. 10 and to rotate the safety catch bodily in a counter-clockwise direction about its pivot pin 238, as viewed in Fig. 11. This movement of the safety catch 212 renders the nose 246 thereof, which continuously bear against the foot 248, effective retracting link 214 in a counter-clockwise direction as viewed in Fig. 11.

This rotative movement of the retracting link 214 in turn, through the engagement of the foot 256 thereof with the abutments 258 on the looking dogs, causes the dogs 216, 218 and 220 to move rightwardly as viewed in Fig. 11 to a position in which the noses thereof are out 01' the path of movement of the bolt 208. 1

During the course of the travel of the nose of the safety catch 212 along the flat underside of the lock keeper abutment 298, the upper end of 208 engages the tapered portion 802 of the abutment 298, and continued door closing movement forces the bolt downwardly within its housing 208. During the course of this downward movement, the base 224 of the bolt 208 moves into the path of and in blocking relation to the locking. dogs 216, 218 and 220, andso becomes effective to hold the dogs in the retracted positions. When the continued door closing movement brings the nose of the safety catch 212 out of range of the lower end of the abutment 298, the spring 264 214 becomes effective to rotate this link, to its original position shown in Fig. 11 The return movement of the retracting link 214 to the safety catch 212, through the engagement of the foot 246 on the retracting link with the nose 246 on the safety catch. Accordingly, the nose of the safety catch is caused which it abuts the vertical face 300 of the abutment 298. With the parts in this position, it will be appreciated that the safety catch is effective to hold the door in a partially closed or safety position, and that the door cannot be moved to the open position.

is imparted l to move upa position in e to rotate the 1 associated with the retracting link Continued door closing movement causes the upper end of the bolt 208 to travel along the flat underside of the lock keeper abutment 298, and ultimately brings the bolt to a position in which the nose thereof passes derside of the abutment 298. Shortly after the just mentioned relation is obtained, the downwardly projecting finger 232, formed at the lower end of the bolt 208, moves into engagement with the lower abutment 298 formed on the lock keeper 294. A continued door closing movement, accordingly, renders the abutment 296 eilective to act upon the finger 232 and cam the bolt 208 upwardly somewhat. The parts are so proportioned that the upward movement thus caused is effective to bring the base 224 of the bolt 208 out of blocking relation to the locking dogs 216, 218 and 220 which thereupon are caused to move to the left as viewed in Fig. 11 to positions unout of range of such un-' tance.

neath the foot 230 of the 6 derneath the foot 230 on the bolt. Due to the tapered noses Zita, HM and 228a of the locking dogs, they are eiiective to apply a positive upward force on the bolt 208. This upward force in turn, due to the engagement of the tapered face 226 of the bolt with the inner edge of the lock keeper abutment 299, is translated into a positive force acting upon the door to urge it in a door closing direction and to hold it in the closed position.

As in the case of the first embodiment, due to the progressively larger dimensioning of the noses thereof, the dogs 216, 218 and 220 assume correspondingly different projected positions, the smaller dog 220 being projected the greatest dis- The front portion of the nose 229m of the dog 229 is preferably formed as a flat, and it will be appreciated the dog 220 is normally enabled to move far enough in the projecting direction so as to bring this flat portion underbolt 298. Under such circumstances, the larger bolts H8 and 22B remain effective to apply additional camming force. The parts are preferably so positioned that in the normal fully closed position of the door, the dog 220 is in the just mentioned blocking position and in such position it positively prevents a downward or unlocking movement of the bolt 208..

If it is desired to open the door, utilizing the outside handle, it will be appreciated that the handle 292 may be swung in a horizontal plane, correspondingly rotating the crank 2855, and forcing the outside rollback element 2 I il in a clockwise direction as viewed in Fig. 10 against the force of its spring 218. The just mentioned movement of the rollback 2!!) causes the foot 2M thereof to bear upon the safety catch M2, and rotate it in a counter-clockwise direction. This counter-clockwise movement releases the dogs 2th, 2H! and 22b in the previously described manner and also permits the bolt 2% to move downwardly to a position in which it clears the upper abutment 298 of the lock keeper, and in which it holds the dogs in the retracted position. In addition, it lowers the nose of the safety catch M2 to a position in which it clears the just mentioned abutment. With the parts thus retracted, it will be appreciated that the door may be freely moved to the open position. It will be understood that by the time the bolt 208 is moved downwardly far enough to bring the finger 230 thereof the level of the lower lock keeper abutment 296, the finger 232 is moved out of range of such abutment, and is not interfered with thereby.

The door may similarly be opened from the inside, by rotating the inside retracting link 222 in a clockwise direction as viewed in Fig. 11, which action, through the engagement of the foot 252 thereof with dogs 2H5, H8 and 220 in the previously described manner. At the same time, the rotation of the retracting link 2 retracts the safety catch M2 in the above described manner, permitting the door to be freely opened.

In order to lock the will be appreciated that be rotated somewhat in a rection as viewed in Fig. 11 so as to bring the nose 210 thereof underneath and in blocking relation to the nose 2 i3 of the outside roll back 210. This action, of course, prevents a bolt retracting movement of the latter. If the link 222 is moved to blocking position at a time that door from the inside it the inside link 222 may the retracting link 2M, retracts the.

counter-clockwise di the door is open, it will be appreciated that the pivotal movement of the safety catch ZlZ, which accompanies a closing of the door as previously described, brings the nose 250 thereof into engagement with the foot 252 formed on the inside retracting link and restores the latter to the normal position shown in Fig. 11, in which the outside roll back member is in condition for operation.

It will also be appreciated that when the door is in the fully closed position, the lower surface of the housing 296 bears upon the upper edge of the lower abutment 296 of the lock keeper 2%. At the same time, the sloping face 22'! of the bolt 208 bears against the lower corner of the upper abutment 298, so that the bolt 208 and the housing 2% constitute the male member of a dovetail, the female elements being the abutments 296 and 298. The parts thus cooperate to securely hold the door against vertical rattling movement.

The embodiment of the invention shown in the remaining figures of the drawing is equivalent in operation, in a broad sense, to the previously described embodiments. As compared to the just described embodiment, it may be broadly characterized as one in which the locking dogs are pivotally instead of slidably mounted.

Referring particularlyto Figs. 18 through 22, the casing of the lock is formed to provide a flange 500 which lies parallel to and is suitably securedto the rail 302 of the associated door; a base id i which extends at substantially a right angle to theflange 08; and a supplemental base element lflfi which is secured to the casing in suitably spaced relation to the base 405. The bolt 398, which may and preferably does duplicate the structure of the previously-described bolt 298 in all substantial respects, is vertically slidable within a housing ilil which is secured to the flange it!) and projects outwardly thereof ing, and

, jects outwardly through a suitable opening prothrough an opening in the door rail. The guiding relation between the bolt 608, the housing iiil and the flange 409 preferably corresponds to the relation described with respect to the preceding embodiment.

The safety catch 5 i 2 is pivotally mounted upon a pin 356 which extends between the base 404 and the supplemental member tilt of the easis provided with a nose MS which provided therefor in the flange 306. The nose 6 is preferably formed as described with reference to the nose of the safety catch H2. The body of the safety catch M2 extends generally vertically between the casing members @6 2 and 696, and is urged in a clockwise direction by a spring 8 which is coiled around the pin M4! and one end whereof bears against the flange which forms part of the nose M9. The other end 420 of the spring i l B is looped through a slot provided therefor in the inside retracting link are, and so urge the latter in a counterclockwise direction about its pivot pin 53%.

The means for retaining the bolt M8 in the fully projected position comprises the three dogs 325, 328 and i328, the noses MM, 42%, and 428a. are progressively dimensioned in a manner corresponding to the progressive dimensioning of the previously described dogs. The dogs 424, 425 and Mt are pivotally mounted upon a pin $30, the ends whereof are supported in the case plate members 5M and M96. The dogs 52%, 426 and 525 are of hell crank shape and the ends, remote from the noses, of the two dogs 62d and 526 bear safety catch 4! 2. The corresponding end 428b of the dog 428, which is nearest the case plate member 404, is abutted by the extreme lower end 432 of the safety catch 2.

a counter-clockwise or looking direction. g

The inside retracting link 422 is rotatably secured to the outer face a pin 438. The upper end of the link 422 is arranged for connection to a usual inside operating lever 440, and the lower end thereof is provided foot 452 formed on the safety catch 2, so as 460 is arranged to be mounted of the case plate 404 by 2,301,557 against the lower end of the flange 4|? of the prevent a re-opening movement in a recess 462 provided therefor in the door pillar and comprises an upper abutment 464 and a lower abutment 466. The upper abutment 464 is provided with a sloping forward face 460, and a substantially horizontal under-surface 410, and a substantially vertical inner surface 412.

The remaining details of construction may best be understood. with reference to a description of the operation of the lock. It will be understood that the moving parts of the lock are shown in the figures in the positions which they may occupy when 464. Continued movement renders the sloping face to cam the safety catch nose and to consequently rotate the door closing 468 effective 6 downwardly, safety catch H2 464. The. rotative movement of the safety catch 2 renders the flange 4H and the extreme lower end 432 thereof effecment of the foot 409 on the bolt 408. This latter action permits the bolt 408 to move downwardly.

As the door closing movement continues, and prior to the time that the nose 6 of the safety catch 2 passes beyond the underside 4100f the abutment 464 on the lock keeper, the nose 408 oi. the bolt comes into engagement with the sloping face 468 of the just mentionedabutment. Continued door closing movement, accordingly, renders the sloping face 468 effective base 4 thereof lies in front of and in blocking relation to the dogs 424, 426 and 428. The bolt thus becomes effective to hold these dogs in the ietracted position.

When the nose 6 of the safety catch passes to-cam the bolt 400 downwardly to a positioncin which the spondihg movement of 1 beyond the underside 410 of the door keeper 7 trated unlocked position. v

the parts have reachedthis position, the safety catch 2 becomes effective to of the door. 'As the door projects downwardly below the level of the bolt housing 4| 0, comes into engagement with the lower lock-kee er abutment 466. Further door closing movement renders the latter abutment efposition, by virtue of the engagement of the =tapered nose thereof with the inner corner of the upper lock-keeper abutment 464.

retracting movement isconsequently firmly held in the fully closed position. v

If it 'is desired to unlatch the door from the inside,' the inside operator to the through the engagement of the nose 442 with the foot 444, actuates the safety catch 2 in a counter-clockwise direction, effecting a retraction through the actionof the nose 450 on the foot 452.

operation, from the interior of the car, it will be appreciated that the inside operating member 2 may be rotated in a counter-clockwise direcnside link, and restores the If it is desired to lock the'cuter handle against since the abutment 464 appreciated that It will further be appreciated that as in the case of the previously described embodiments, the abutments 464 and 466 of the lock-keeper constitute the female elements of a dovetail, is continuously acted against by the bolt 408, and since the lower abutment 406 is abutted by the lower end of the bolt housing 4H].

From the foregoing description, it will be the present invention provides substantial improvements in the operating char acteristics of locks, adapted particularly for vehicles. It will further be appreciated that the invention may be embodied in forms widely difiering from the' specific embodiments disclosed. It is desired accordingly that the present description be regarded in an illustrative and not in a limitin sense. a

What is claimed is:

1. In a latch and dovetail mechanism for association with a door member and a pillar member, the combination of a pair of spaced abutments carried by one of the members, one of the abutments being formed as a lock keeper; means carried by the other member and including a movabl mounted bolt, said means being disposed between the two abutments when the door is closed, the bolt being disposed to engage over the lock keeper abutment when the door is closed so as to hold the door in locked position and to wedge the said means between the two abutments; and means for controlling the. position of the bolt including a movably mounted member disposed to cooperate with one of the abutments to hold the doorin a partially closed position.

2. In a latch and dovetail mechanism for association with a door member and a pillar member, the combination of a pair of spaced abutments actuated during carried by one of the members, one of the abutments being formed as a lock keeper; means carried by the other member and including a movably mounted bolt, said means being disposed between the two abutments when the door is closed, the bolt being disposed to engage over the lock keeper abutment when the door is closed so as to. hold the door in locked position and to wedge the said means between the two abutments; and an additional element movably mounted upon said other member and adapted to cooperate with one of the abutments to hold the door in a partially closed position.

3. In a latch mechanism for-cooperation between a door member and a pillar member, a lock keeper being carried by one of the members; the combination of a bolt carried by the other member and slidable thereon between a retracted position and a projected position in which it wedgingiy engages the keeper so as to urge the door to a fully closed position; a pivotally mounted holding means disposed to urge the bolt in a projecting direction; and means for swinging the holding means out of cooperative engagement with the bolt so as to permit the latter to be retracted.

4. In a latch mechanism for cooperation between a door member and a pillar member, the combination of a keeper carried by one of the members; a bolt movably carried by the other of the members and adapted to be moved into engagement with the keeper so as to hold the door in a fully closed position; and means for controlling the position of the bolt including a movably mounted member adapted to cooperate with the keeper to hold the door in a partially closed position,

- ment of the 5. In a 'latch mechanism for cooperation between a door member and a pillar member, the combination of a keeper carried by one of the members; a bolt movably carried by the other of the members; holding means movably associated with the bolt for urging it into engagement with the keeper to hold the door in a fully closed position; and means for controlling the position of said holding means including an element disposed to cooperate with the keeper to hold the door in a partially closed position.

6. In a latch mechanism, the combination of a bolt mounted for sliding movement between retracted and projected positions, holding means movable between a first position in which it is effective to urge the bolt in a projecting direction and a second position in which path of movement of the bolt; means for moving the holding means; and means rendering the bolt, when retracted, effective to hold the holding means in the second position.

"I. In a latch mechanism for association with a door, the combination of a bolt mounted for movement between retracted and projected positions; locking means mounted for movement between'a first position in which it is effective to urge the bolt to a projected position and a second position in which it is out of the path of movement of the bolt; meansrendering the bblt effective when retracted to retain the locking means .in the second position; and means a closing movement of the door for-moving the locking means to the second position.

8. In a latch mechanism, the combination of a bolt mounted for movement between retracted and projected positions; locking means mounted for movement between a first position in 'which' it is effective to urge the bolt to a projected position and a second position in which it is out of the path of movement of the bolt; means rendering the bolt efiective when retracted to retain the locking means in the second position; means actuated at a first stage of a closing movedoor for moving the locking means to the second position; and additional means rendered efiective at a later stage of the door closing movement for moving the bolt so as to release the locking means to the first position.

9. In a latch mechanism for association with a door having a rail and an associated pillar, the combination of a housing member carried on the outerface of said rail, a pair of spaced abutments carried on said pillar and disposed to receive said housing between them, a bolt movably carried in said housing, cam means carried in the housing and disposed to act on the bolt so as to wedge the bolt and the housing between said abutments, and means carried within the body of the door for releasing said cam means from the bolt.

10. In a latch and dovetail mechanism for association with a door member and a door pillar member, the combination of a pair of spaced abutments carried on one of the members, means carried by the other of the members and including a bolt movably supported for movement between a projected position and a retracted position, said means being disposed to be received etween the two abutments when the door is closed, holding means acting on the bolt for urging it to the projected position and causing it to bear against one of the abutments and wedge the said means between the two abutments, and an operator operatively associated with the holding means for releasing the holding means from it is out of the position, holding means the bolt so as to enable the bolt to moveto the retracted position.

11. In a latch and dovetail mechanism for association with a door member and an associated pillar member, the combination 01' a pair of, spaced abutments carried by one of themembers, one of the abutments being formed as a keeper, means carried by the other member and including a bolt movably mounted for movement between a projected position and a retracted position, said means being disposed to be received between the two abutments, holding means acting on the bolt to urge it to the projected position and cause it to engage the keeper abutment and hold the door closed and to wedge said means between the two abutments, and an operator operatively associated with the holding means for releasing the holding means from thebolt so as to enable the bolt to move to the retracted position.

12. In a latch and dovetail mechanism for association with a door member and a pillar member, the combination of a pair of spaced abutments carried by one of the members, one of the abutments being formed as a keeper, means carried by the other member and including a bolt mounted for sliding movement between a projected position and a retracted position, said means being disposed between the two abutments when the door is closed, holding means for urging the bolt to the projected position and cause it to engage with the keeper abutment so as to hold the door closed and so as to wedge the said means between the two abutments, and an operator operatively asso- 1 ciated with the holding means for releasing the holdin means from the bolt so as to enable the bolt to move to the retracted position.

13. In a latch mechanism for cooperation between a door member and a pillar member, a lock keeper being carried by one of the members,

the combination of a bolt, means mounting the.

bolt on the other member for sliding movement thereon between a retracted position and a projected position in which it wedgingly engages the keeper so as to urge the door to a fully closed position, andmeans acting on the bolt to continuously urge it to slidingly advance towards said projected position and to positively prevent a retrograde movement or the bolt towards said retracted position. i

14. In a latch mechanism for cooperation between a door member and a pillar member, a lock keeper being carried by one of the members, the combination of a bolt carried by the othermember and slidable'thereon between a retracted position and a projected position in which it wedgingly engages the keeper so as to urge the door to a fully closed position, and means including a plurality of progressively larger locking elements disposed to continuously act upon the bolt to urge it to slidingly advance towards said projected position and to positively prevent a retro grade movement of thebolt towards said retracted position.

15. In a latch mechanism for cooperationbetween a door member lock keeper being carried by one of the members, the combination of a bolt, means mounting the bolt on the other member for sliding movement thereon between a retracted position and a projected position in which it wedgingly engages the keeper so as to urge the door to a fully closed disposed to act upon the bolt to urge it to slidingly advance towards and a pillar member, a

, holding means out of cooperative relation to said 'tracted position and which it can pass over the keeper bolt so as to enable said retracted position. v

16. In a latch mechanism for cooperation be tween a door member and a pillar member, a keeper being carried by one of the members, the

bolt to slide to said combination of a bolt carried by the other memher for movement between a projected position in which it is cooperable with the keeper to hold the members closed and a retracted position in which it can pass over the keeper duringa closing movement of the members, holding means operatively associated with the bolt for.-urging the bolt toward the projected position, andmeans actuated as an incident to a closing movement of said members for retracting said holding means out of cooperative relation to the bolt so as to enable said boltto move to the repass over said keeper during said closing movement. i I

17. In a latch mechanism for cooperation between a. door member and a pillar member, a keeper being carried by one of the members, the combination of a bolt carried by the other member for movement between a projected positionin which it is cooperable with the keeper to hold the members closed and a retractedposition in during a closing movement of the members, holding means operatively associated with the bolt for urging the bolt toward the projected position, means actuated as an incident to a closing movement of said members for retracting said holding means out of cooperative relation to the bolt so as to enable said bolt to move tothe retracted position and pass overv said keeper during said closing movement, and additional means comprising an operator forsaid latch for actuating said holding means out of cooperative relation to the bolt so as to enable the bolt to move to the retracted position and enable an opening movement of v which it can pass over the keeper during a closing movement of the members, holding means operatively associated with the bolt for urging the bolt toward the projected position, and means actuated as an incident to a closing movement of said members for retracting said holding means out of cooperative relation to the bolt so as to enable said bolt to move to the retracted position and pass over said keeper during said closing movement, said last-mentioned means being cooperable with the keeper'to hold the members in a partially closed or'safety position.

19. In a door latch, the combination of a bolt movable between a projected keeper engaging position and a retracted position, holding means for urging the bolt to the projected position and cooperable therewith to prevent a retrograde movement of the bolt toward the retracted position, an. operator for retracting the holding 1 additionally controlling the holding means and for restoring the operator to effective condition.

20. In a door latch, the combination of a bolt movable between a projected keeper engaging position and a retracted position, holding means for urging the bolt to the projected'position and cooperable therewith to prevent a retrograde movement of the bolt toward the retracted position, an operator for retracting the holding means to a retracted position out of holding relation to the bolt, locking means for rendering the operator ineffective, and means operated as an incident to a closing movement of the door for retracting the holding means and for restoring the operator to effective condition.

21. In a door latch for cooperation between a hinged door member and a pillar member, the combination of a keeper assembly mounted on one of the members and a bolt assembly mounted on the other member for cooperation with the keeper assembly, the keeper assembly comprising a pair of portions spaced apart along a line substantially parallel to the axis of hinging movement .of the door, the bolt assembly including portions disposed to pass between the said parts during a closing movement of the door, one of the assemblies having a first retractable element positioned to cooperate between a said portion of the bolt assembly and one portion of the keeper assembly to hold the door in the fully closed position, and one of the assemblies having a second retractable element positioned to cooperate between a said portion of the bolt assembly and the other portion of the keeper assembly to hold the door in a partially closed position.

22. In a latch for association between relatively movable members, the combination of a bolt carried by one of the members and movable between a retracted position and a projected position in which it is efiective to cooperate with a keeper carried by the other member to hold the members in a fully closed position, holding means for urging the bolt to the projected position and cooperable therewith to prevent a retrograde movement of the bolt toward the retracted position, an operator for retracting the holding means to a retracted position out of holding relation to the bolt, locking means for rendering the operator ineffective, and additional means cooperating between the members to hold them in a partially closed or safety position and operably responsive to a closing movement of the members torestore the operator to effective condition.

23. Looking means for an automobile door comprising locking structure on the door, keeper structure mounted adjacent to the door, said locking structure comprising a movable latch bolt engageable with said keeper structure upon closing of the door to be moved from unlatching position to latching position, and means independent of said latch bolt cooperable with said keeper structure in advance of said latch bolt when the door is moved to closed position for setting of said latch bolt to unlatching position before cooperation of said latch bolt with said keeper structure in the event that said latch bolt had been accidentally moved to its latching position while the door was open.

24. Looking means for an automobile door comprising locking structure on the door and a keeper structure on the door frame, a movable latch bolt on said locking structure normally in cocked position and adapted for cooperation with the keeper structure to be moved thereby into latching position when the door is closed, an operator for the door and setting means controllable thereby for effecting re-setting of said bolt into cocked position before the door is swung to closed position in case said bolt has accidentally 5 become displaced from cocked position when the door is open, and a safety latch bolt co-operable with said keeper structure in advance of said movable latch bolt for actuating said setting mechanism to efiect re-setting of said movable latch bolt to cocked position during closure movement of the door in the event the movable latch bolt has not been set to cocked position by operation of the operator prior to closing movement of the door.

25. Looking mechanism for an automobile door comprising locking structure on the door, keeper structure on the door frame, a movable latch bolt on the lock structure cooperable with said keeper structure to be moved from unlatching position into position for latching engagement with the keeper structure when the door is moved to closed position, holding means for locking the latch bolt in latching position, a releasing lever engageable with said holding means to release said holding means from said latch bolt, an operator for the door, a setting lever operable by operation of said operator to actuate said release lever to effect release of the holding means whereby said latch bolt will be released to permit opening movement of the door andto be returned to its unlatching position when the door is swung open, and a safety latch bolt carried by said releasing lever for cooperation with the keeper structure in advance of said movable latch bolt for operating said holding mean for release of said movable latch bolt for return thereof to its unlatching position during closing movement of the door in the event that said movable latch bolt has accidentally been set to latching position while the door is open and has not been returned to unlatching position by operation of the operator prior to closing movement of the door.

26. In a door latch, the combination of a bolt movable between a projected keeper engaging position and aretracted position, holding means for urging the bolt to the projected position and c0- operable therewith to prevent a retrograde movement of the bolt toward the retracted position,

-an operator for retracting the holding means to a retracted position out of holding relation to the bolt, locking means for rendering the operator ineffective, and means separate from said bolt .and movable as an incident to a closing movement of the door for restoring the operator to effective condition.

27. In a latch mechanism for cooperation between a door member and a pillar member, one of said members being provided with a first holding element, a second holding element, means mounting the second holding element on the other member for sliding movement thereon between a retracted position and a projected position in which it wedgingly engages the first holding element as to urge the door to a fully closed position, and means acting on the second holding element to continuously urge it to slidingly advance towards said projected position and to positively prevent a retrograde movement of said second holding element towards said retracted position.

28. In a latch mechanism for cooperation between a door member and a pillar member, one of the members being provided with a first holding element, a second holding element carried 1 by the other member for movement between a projected position in which it is cooperable with the first holding element to hold the members closed and a retracted position in which it permits a closing movement of the members, holding means operatively associated with the second holding element for urging the same towards the projected position, and means actuated as an incident to a closing movement of said members for retracting said holding means out of cooperative relation to said second holding element so as to enable the same to move to the retracted position.

29. In a latch mechanism for cooperation between a door memberand a pillar member, one of the members being provided with a first holding element, a second holding element carried by the other member for movement between a projected position in which it is cooperable with the first holding element to hold the members closed and a retracted position in which it permits a closing movement of the members, holding means operatively associated with the second holding element for urging the same towards the projected position, and means actuated as an incident to a closing movement of said members for retracting said holding means out of cooperative relation to said second holding element so as to enable the same to move to the retracted position, said last-mentioned means being cooperable between the members to hold the same in a partially closed or safety position.

30. In a lock for a door, a strike, main and supplemental bolt members engageable with and movable by said strike during a closing movement of said door, one of said bolt members being releasably engageable with said strike to hold said door in the fully closed position, a dogging mechanism eilective in dogging position to prevent release of said one latch bolt from said keeper, the other said bolt member being engageable with said strike prior to the engagement thereof by said one bolt member during a.

r members during closing movement of said door and actuable thereby to move said dogging mechanism out of dogging relation to said one bolt member, an outside operated device operable to move said dogging mechanism out of dogging relation to said one bolt member, an inside operated device and means responsive to movement thereof in one direction to move said dogging mechanism out of dogging relation to said one bolt member, additional means responsive to movement of said inside operated device in another direction to render said outside operated device ineffective so so move said dogging mechanism, and means operated by the movement of one of said bolt a closing movement of said door for moving said inside operated device out of said controlling relation to said outside operated device. m

31. In a lock for a door, a strike, main and supplemental bolt members engageable with and movable by said strike during a closing movement of said door, one of said bolt members being releasably engageable with said strike to hold said door in the fully closed position, a dogging mechanism effective in dogging position to prevent release of said one latch bolt from said keeper, the other said bolt member being engageable with said strike prior to the engagement thereof by said one bolt member during a closing movement of said door and actuable thereby to move said dogging mechanism out of dogging relation to said one bolt member, an operator operable to move said dogging mechanism out of dogging relation to said one bolt member, locking means operable to render said operator ineffective to so move said dogging mechanism, and means operated by the movement of one of said bolt members during a closing movement of said door for restoring said locking means to unlocked condition.

ROLLO MARPLE. 

